1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/i2c-algo-bit.h>
20 	struct radeon_i2c_chan 	*chan = data;  in radeon_gpio_setscl()  local
21 	struct radeonfb_info	*rinfo = chan->rinfo;  in radeon_gpio_setscl()
24 	val = INREG(chan->ddc_reg) & ~(VGA_DDC_CLK_OUT_EN);  in radeon_gpio_setscl()
28 	OUTREG(chan->ddc_reg, val);  in radeon_gpio_setscl()
29 	(void)INREG(chan->ddc_reg);  in radeon_gpio_setscl()
34 	struct radeon_i2c_chan 	*chan = data;  in radeon_gpio_setsda()  local
35 	struct radeonfb_info	*rinfo = chan->rinfo;  in radeon_gpio_setsda()
38 	val = INREG(chan->ddc_reg) & ~(VGA_DDC_DATA_OUT_EN);  in radeon_gpio_setsda()
42 	OUTREG(chan->ddc_reg, val);  in radeon_gpio_setsda()
43 	(void)INREG(chan->ddc_reg);  in radeon_gpio_setsda()
48 	struct radeon_i2c_chan 	*chan = data;  in radeon_gpio_getscl()  local
49 	struct radeonfb_info	*rinfo = chan->rinfo;  in radeon_gpio_getscl()
52 	val = INREG(chan->ddc_reg);  in radeon_gpio_getscl()
59 	struct radeon_i2c_chan 	*chan = data;  in radeon_gpio_getsda()  local
60 	struct radeonfb_info	*rinfo = chan->rinfo;  in radeon_gpio_getsda()
63 	val = INREG(chan->ddc_reg);  in radeon_gpio_getsda()
68 static int radeon_setup_i2c_bus(struct radeon_i2c_chan *chan, const char *name)  in radeon_setup_i2c_bus()  argument
72 	snprintf(chan->adapter.name, sizeof(chan->adapter.name),  in radeon_setup_i2c_bus()
73 		 "radeonfb %s", name);  in radeon_setup_i2c_bus()
74 	chan->adapter.owner		= THIS_MODULE;  in radeon_setup_i2c_bus()
75 	chan->adapter.algo_data		= &chan->algo;  in radeon_setup_i2c_bus()
76 	chan->adapter.dev.parent	= &chan->rinfo->pdev->dev;  in radeon_setup_i2c_bus()
77 	chan->algo.setsda		= radeon_gpio_setsda;  in radeon_setup_i2c_bus()
78 	chan->algo.setscl		= radeon_gpio_setscl;  in radeon_setup_i2c_bus()
79 	chan->algo.getsda		= radeon_gpio_getsda;  in radeon_setup_i2c_bus()
80 	chan->algo.getscl		= radeon_gpio_getscl;  in radeon_setup_i2c_bus()
81 	chan->algo.udelay		= 10;  in radeon_setup_i2c_bus()
82 	chan->algo.timeout		= 20;  in radeon_setup_i2c_bus()
83 	chan->algo.data 		= chan;	  in radeon_setup_i2c_bus()
85 	i2c_set_adapdata(&chan->adapter, chan);  in radeon_setup_i2c_bus()
88 	radeon_gpio_setsda(chan, 1);  in radeon_setup_i2c_bus()
89 	radeon_gpio_setscl(chan, 1);  in radeon_setup_i2c_bus()
92 	rc = i2c_bit_add_bus(&chan->adapter);  in radeon_setup_i2c_bus()
94 		dev_dbg(&chan->rinfo->pdev->dev, "I2C bus %s registered.\n", name);  in radeon_setup_i2c_bus()
96 		dev_warn(&chan->rinfo->pdev->dev, "Failed to register I2C bus %s.\n", name);  in radeon_setup_i2c_bus()
102 	rinfo->i2c[0].rinfo	= rinfo;  in radeon_create_i2c_busses()
103 	rinfo->i2c[0].ddc_reg	= GPIO_MONID;  in radeon_create_i2c_busses()
105 	rinfo->i2c[0].adapter.class = I2C_CLASS_HWMON;  in radeon_create_i2c_busses()
107 	radeon_setup_i2c_bus(&rinfo->i2c[0], "monid");  in radeon_create_i2c_busses()
109 	rinfo->i2c[1].rinfo	= rinfo;  in radeon_create_i2c_busses()
110 	rinfo->i2c[1].ddc_reg	= GPIO_DVI_DDC;  in radeon_create_i2c_busses()
111 	radeon_setup_i2c_bus(&rinfo->i2c[1], "dvi");  in radeon_create_i2c_busses()
113 	rinfo->i2c[2].rinfo	= rinfo;  in radeon_create_i2c_busses()
114 	rinfo->i2c[2].ddc_reg	= GPIO_VGA_DDC;  in radeon_create_i2c_busses()
115 	radeon_setup_i2c_bus(&rinfo->i2c[2], "vga");  in radeon_create_i2c_busses()
117 	rinfo->i2c[3].rinfo	= rinfo;  in radeon_create_i2c_busses()
118 	rinfo->i2c[3].ddc_reg	= GPIO_CRT2_DDC;  in radeon_create_i2c_busses()
119 	radeon_setup_i2c_bus(&rinfo->i2c[3], "crt2");  in radeon_create_i2c_busses()
124 	if (rinfo->i2c[0].rinfo)  in radeon_delete_i2c_busses()
125 		i2c_del_adapter(&rinfo->i2c[0].adapter);  in radeon_delete_i2c_busses()
126 	rinfo->i2c[0].rinfo = NULL;  in radeon_delete_i2c_busses()
128 	if (rinfo->i2c[1].rinfo)  in radeon_delete_i2c_busses()
129 		i2c_del_adapter(&rinfo->i2c[1].adapter);  in radeon_delete_i2c_busses()
130 	rinfo->i2c[1].rinfo = NULL;  in radeon_delete_i2c_busses()
132 	if (rinfo->i2c[2].rinfo)  in radeon_delete_i2c_busses()
133 		i2c_del_adapter(&rinfo->i2c[2].adapter);  in radeon_delete_i2c_busses()
134 	rinfo->i2c[2].rinfo = NULL;  in radeon_delete_i2c_busses()
136 	if (rinfo->i2c[3].rinfo)  in radeon_delete_i2c_busses()
137 		i2c_del_adapter(&rinfo->i2c[3].adapter);  in radeon_delete_i2c_busses()
138 	rinfo->i2c[3].rinfo = NULL;  in radeon_delete_i2c_busses()
146 	edid = fb_ddc_read(&rinfo->i2c[conn-1].adapter);  in radeon_probe_i2c_connector()
156 		if (rinfo->is_mobility /*&& conn == ddc_dvi*/ &&  in radeon_probe_i2c_connector()